Use and Care Manual
HarvestRight.com | 1-800-700-550824
Oil Filtration
Using the oil lter provided to you is
a great way to save money, preserve
the life of your vacuum pump, allow
your freeze dryer to perform as
efcient as possible, and be more eco
friendly. Filtering the oil is quick and
easy, but will aid the performance
of your freeze dryer. Changing the
oil between each batch is required
by the vacuum pump company for
warranty purposes. When ltering
used oil, you may want to use
cardboard (or something similar) to
absorb any oil that could potentially
drip on the oor.
1. At the end of each batch (preferably
when the oil is still warm) place the
oil lter below the oil reservoir drain
valve.
2. Open the oil reservoir drain valve
and allow oil to drain into your Oil
Filter. Assure all of the oil comes
out by lifting the rear of the vacuum
pump slightly.
3. Wait for the oil to lter through
your ltration system (this could
take a couple of hours).
4. Pour the ltered oil back into
your vacuum pump.
5. Top off oil assuring the correct
amount of oil is in your vacuum
pump. See page 7, Figure 5.
6. Start your freeze dryer.
*Occasionally you may choose to pour
your oil through the lter multiple
times in order to better clean the oil
How do I know that my ltered oil
is clean for use? The best indications
for cleanliness are as follows:
• Oil is void of debris or particulates
• Oil is not milky or chalky
• Oil has clarity (the color may
be yellow or amber and still
have clarity)
• Your vacuum pump is achieving a
pressure (mTorr) suitable for
freeze drying
How do I know when I need to
replace my oil lter?
• Oil won’t drain through lter (this
can happen over time as debris
builds up)
• Oil isn’t cleaning well (I.e. The
oil continues to be milky or full
of debris)
What do I do to replace my oil lter?
• Replace the batting, the lter jar
or purchase a replacement lter
from Harvest Right